Si4730/31-D50 BROADCAST AM/FM RADIO RECEIVER Features Worldwide FM band support No manual alignment necessary (64108 MHz) Programmable reference clock Worldwide AM band support Volume control (5201710 kHz) Adjustable soft mute control Excellent real-world performance RDS/RBDS processor (Si4731 only) Integrated VCO 2 I S digital audio out Ordering Information: Advanced AM/FM seek tuning 2-wire and 3-wire control interface See page 26. AM/FM digital tuning Integrated LDO regulator Automatic frequency control (AFC) Wide range of ferrite loop sticks and Automatic gain control (AGC) Pin Assignments air loop antennas supported Digital FM stereo decoder QFN package Programmable AVC max gain RoHS compliant Si4730/31 Programmable de-emphasis Not suitable for wall-plugged Seven selectable AM channel filters consumer electronic applications* Advanced audio processing *Note: For consumer electronics applications, use Si4730/31-D60 for worldwide 20 19 18 17 NC 1 16 CE and EN compliance. FMI 2 15 DOUT Applications RFGND 3 14 LOUT GND Cellular handsets Mobile Internet Devices Tablets PAD AMI 4 13 ROUT MP3 players USB FM radio eBooks RST 5 12 GND Portable navigation 6 11 VA Description 7 8 9 10 The Si4730/31-D50 is the fourth generation digtial CMOS AM/FM radio receiver IC from Skyworks. The Si4730/31-D50 integrates the complete tuner function from antenna input to audio output. This product, its features, and/or its architecture is covered by one or more of Functional Block Diagram the following patents, as well as other patents, pending and issued, both foreign and domestic: 7,127,217 Si473x 7,272,373 7,272,375 7,321,324 AMI 7,355,476 7,426,376 7,471,940 DOUT AM RDS LNA DIGITAL ANT (Si4731) 7,339,503 7,339,504. RFGND DFS AUDIO GPO/DCLK AGC LOW-IF ADC DAC ROUT FM ANT LNA DSP FMI ADC DAC LOUT AGC 2.7 5.5 V VA CONTROL LDO AFC VD GND INTERFACE 1.623.6 V Skyworks Solutions, Inc. Phone 781 376-3000 Fax 781 376-3100 sales skyworksinc.com www.skyworksinc.com Rev. 1.0 Skyworks Proprietary Information Products and Product Information are Subject to Change Without Notice November 10, 2021 Handset-only Si4730-31-D50 device. Consumer Electronics Please Use Si4730-31-34-35-D60 RCLK SEN SCLK SDIO RST SEN NC SCLK GPO1 SDIO RCLK GPO2/INT GPO3/DCLK VD DFSSi4730/31-D50 2 Skyworks Solutions, Inc. Phone 781 376-3000 Fax 781 376-3100 sales skyworksinc.com www.skyworksinc.com Rev. 1.0 Skyworks Proprietary Information Products and Product Information are Subject to Change Without Notice November 10, 2021 Handset-only Si4730-31-D50 device. Consumer Electronics Please Use Si4730-31-34-35-D60